Page 39 - VSD_Brochure_31102023

HVAC DRIVES
Soft start and stop
User defined ramps for softer fan/
pump/compressor starts and stops
Software characteristics for the ACH580 HVAC eliminate mechanical and electrical
stresses on the system.
drives family
The ACH580 drives come with a range of advanced features that not only provide a
Flying start
thorough heating, ventilation and air conditioning control, but also make drive integration,
The feature allows to catch
commissioning, and operation easier than ever before.
free-wheeling fans and smoothly
accelerate or decelerate them to a
required speed, without wasting time
on braking.
Air filter monitoring
The drive alarms on a clogged filter, to
maintain air quality and avoid energy
losses.
Leakage monitoring
In closed loop HVAC systems, drives
can alarm on the leakage in the
system, preventing flooding and
property damage.
Resonance monitoring
Mechanical aspect of resonance
damages the application itself
and connected piping/ductwork,
while acoustic aspect makes the
environment noisy. ABB drives skip
resonance frequencies for better
comfort and longer equipment lifetime.
System overpressure protection
The interlock protects water pipes/air
ducts by stopping pump/fan operation
when the measured pressure exceeds
a threshold, e.g. due to closed valves/
dampers.
Sleep/boost
The feature stops the pump at low
demand, instead of running it slowly
below its efficient operating range.
Allows to save energy and extend
the pump and motor lifetime by
decreasing start/stop cycles during the
day.
38 | Variable Speed Drives
Fireman’s override
In case of fire emergency, drives run
fans ignoring faults and warnings, to
ensure safe evacuation and mitigate
the spread of smoke.
Active braking
In case of fire emergency, drives run
fans ignoring faults and warnings, to
ensure safe evacuation and mitigate
the spread of smoke.
Motor heating
The feature prevents condensation
and saves the motor from failure due
to corrosion, which is typical for rooftop
mounted air handlers.
Bearing monitoring
Bearings are one of the weakest points
in HVAC applications. Drives can alarm
on the bearing upcoming failure, so it
could be replaced timely, without HVAC
process interruption.
Intelligent pump control
The feature maintains stable pumping
process for up to 8 pumps operating
in parallel. It is possible to optimise
the speed and number of pumps for
creating required flow and pressure,
even if one or more pumps fail.
Pump dry run protection
The interlock stops operation when the
pressure on the pump suction side is
below a threshold, to prevent pump
damage from running dry.
Frost protection
Cold temperatures outside might
lead to heating coil freezing. To avoid
damage, drives can alarm on a too
low air temperature and shut down the
system.
Variable Speed Drives | 39
Variable Speed Drives | 39